These were something of a bargain, as there are two packs in an original wooden box. They're by Dondorf, my favourite manufacturer. However, they're a little different to the usual Dondorf cards you see around.
As you can see, they use the English (Rouennais) pattern rather than the more esoteric patterns Dondorf usually invents for itself. They definitely are Dondorf, though: the Jack of Clubs has "Dondorf Frankfurt" written on his black chest band. There are some nice Dondorf touches to the faces, but few people would look at this deck and think they weren't just regular playing cards like the ones you buy in shops.
I doubled the size of the cards in the scan (they're patience cards) so you could read the Jack's chest band, but doing so also made the tax stamp on the Ace of Hearts easier to read. It's from district 15, which is the one for Frankfurt am Main. This particular stamp was used in Germany from 1889 to 1918. The #243 packs were manufactured from 1909 to 1933, so that dates mine to somewhere between 1909 and 1918 inclusive.
The packs don't come with jokers. These could have been taken out (most Dondorf English-pattern decks do have jokers), but it's more likely that they were deliberately omitted; these are patience decks, after all.
Overall, I'm quite pleased with them. I prefer some of the prettier ones, but Dondorf did a good job of making an attractive version of the English pattern.